Katsuki was just a bit off here and there, and most believed it was nothing. It intrigued you quite, to the point you’ve tried to ask if anything's wrong and got exploded in the face.

Then one time, you happen to figure out something you shouldn’t have.

"Don't annoy me with any idiotic questions and imitate Deku, bastard."

Katsuki spoke as you tried to confront, stepping up to you with a hand threatening to do an explosion at you while you backed up to the wall. "I think the answers are obvious. If not, ask fucking wisely. If I find out any extra or two comes up to me and says some shitty thing like 'oh Bakugou you're the traitor' I'll explode that throat of yours."